The Church itself is prophecied many times in the Old Testament:
"Prophecied" = future tense.
I
will build my church.
were "saints" as truly as we are...
This doesn't change the dispensational aspect of the church being a temporary, new creation post Pentecost. The difference is, that in the church age we have full knowledge and we no longer function in shadows.
Colossians 2
16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days:
17 Which are a shadow of things to come;
but the body is of Christ.
The "Body of Christ" is separate from OT saints. They were not sealed by the Holy Spirit and indwelled by the Holy Spirit. The HS could come and go from them, not so in the church.
That does not make the church "superior," just in a better position in terms of knowledge. The OT "saints" went to Paradise at death, we enter directly into the presence of God.
Hebrews 8
6 But now hath he obtained a
more excellent ministry, by how much also he is the mediator of a
better covenant, which was established upon
better promises.
The new creation of God, the church - the Body of Christ, is in a "better" position that the OT saints. The Apostles after the resurrection were in a better position before. Jesus even told them that He could not reveal certain truths to them because they were not able to handle them pre-Calvary.
Again, Covenant theology likes to thrust arguments upon dispensationalists that we do not make.
Since you obviously believe that the temple system did not exist before the temple and that the temple system no longer exists... you then believe in at least 3 different dispensation.
